7100V AST Flex Probe

(Available in lengths from 12 to 70 feet / 3.7 to 21 meters)

Monitoring of products in aboveground storage tanks is time-consuming, dangerous at times and inaccurate at best. Many AST tank-gauging devices are available, but none have the precision and accuracy of OPW’s SiteSentinel® iSite™.

The 7100V Series flexible probe, using OPW’s industry-leading, field-proven magnetostrictive technology, allows greater precision and reliability in measuring AST product levels. This probe is ideal for liquid-level monitoring of product and water levels in a wide variety of liquids in AST’s, including gasoline, diesel, ethanol, biodiesel and lubricants. The 7100V Series can be outfitted with a low-level, inventory-only float kit, giving the operator inventory visibility to the bottom of the tank, as well as water levels in a wide variety of liquids in above ground storage tanks, including gasoline, diesel, ethanol, biodiesel, lubricants and some chemicals.

AST Flex Probe Features

Easy Integration - All probe electronics are integrated into the sensing tube, eliminating the bulky enclosure at the top of the probe and offering greater options for installation and mounting in above ground storage tanks.

Easy Installation - The flexible PVDF probe comes coiled with a threaded fitting on the end of the probe which allows for easy installation.

Note: The recommended fittings are not included in the AST Flex Probe, but can easily be purchased through a local supplier.

Flex Probe Installation Using Pipe Fittings

Flex Probe Catalog Number

Example: 7100V-F1T5-193

Model Number

# of Floats

# of Thermistors

Overall Length

7100V

F1

T1

193

F2

T5

–

7100V-Style Drawing

Flex Probe Lengths

Overall Length

Dead Band

Tank Bottom Clearance

51” – 144” (130 - 366 cm)

6.00” (15.2 cm)

1.00” (2.5 cm)

145” – 288” (368 - 732 cm)

8.00” (20.3 cm)

2.00” (5.1 cm)

289” – 432” (734 - 1097 cm)

12.00” (30.5 cm)

3.00” (7.6 cm)

433” – 600” (1100 - 1524 cm)

14.00” (35.6 cm)

4.00” (10.2 cm)

601” – 720” (1527 – 1778 cm)

17.00” (43.2 cm)

5.00” (12.7 cm)

721” – 840” (1831 – 21,134 cm)

19.00” (48.3 cm)

6.00” (15.2 cm)

IMPORTANT ORDERING NOTE: OPW will deduct the tank bottom clearance from the overall length of the probe that is ordered. For example, customers who order a 300-inch 7100V AST Flex Probe will receive a 297-inch probe.

VSmart 24-Volt Barrier Wiring Diagram

Certifications

Ordering Specifications

AST Flex Probe Specifications

OPW’s new water float can detect a minimum of 2.5 inches (6.4 cm) of water in the bottom of a tank, ensuring
product quality.

7100V-Style Drawing

Flex Probe Length Determination

The flex probe mounts to the tank with a ¾-inch NPT male thread. Obtain the proper fittings to adapt the tank opening to a ¾-inch NPT female thread.

Temporarily install this hardware in the tank opening.

Using a plumb bob or measuring tape, measure the distance (in inches) from the top of the ¾-inch NPT flange to the bottom of the tank. Save this measurement. This will be the Total Height (TH).

Flex probes are ordered by overall length (OAL). Overall length is the distance from the top of the ¾-inch NPT wiring bushing to the tip of the probe. OAL (inches) = 1.5 + (TH x .993).

IMPORTANT ORDERING NOTE: OPW will deduct the tank bottom clearance from the overall length of the probe that is ordered. For example, customers who order a 300-inch 7100V AST Flex Probe will receive a 297-inch probe.

Flex Probe Lengths

Overall Length

Dead Band

Tank Bottom Clearance

51” – 144” (130 - 366 cm)

6.00” (15.2 cm)

1.00” (2.5 cm)

145” – 288” (368 - 732 cm)

8.00” (20.3 cm)

2.00” (5.1 cm)

289” – 432” (734 - 1097 cm)

12.00” (30.5 cm)

3.00” (7.6 cm)

433” – 600” (1100 - 1524 cm)

14.00” (35.6 cm)

4.00” (10.2 cm)

601” – 720” (1527 – 1778 cm)

17.00” (43.2 cm)

5.00” (12.7 cm)

721” – 840” (1831 – 21,134 cm)

19.00” (48.3 cm)

6.00” (15.2 cm)

Probe Length Availability

The flexible AST magnetostrictive probe is available in lengths from 24" to 600". Reference the following for ordering information: